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I need a complete, fabrication-ready Sky130 CMOS inverter, built for a commercial product. The work starts with a clean schematic and ends with a sign-off GDSII that has passed all standard checks. I will be reviewing each stage—schematic entry, SPICE simulation, layout in Magic or KLayout, DRC/LVS with Open PDK tools, parasitic extraction, timing and power verification—so every file must be reproducible in an open-source flow (OpenROAD, Skywater-PDK, ngspice, Netgen, etc.). Deliverables • Clean schematic and simulation deck showing correct VOH, VOL, propagation delay and noise margin for a 1.8 V supply • Layout (MAG or GDS) that matches the schematic and clears Sky130 DRC without waivers • LVS, PEX and corresponding reports confirming connectivity and p...

I need an experienced electronics/PCB engineer to design a reliable, 24/7-operating traffic light controller PCB. This is a safety-critical system (not a hobby project). SYSTEM: • MCU: ESP32 • Load: 220VAC traffic light LED modules • Outputs: ~19 relay-controlled channels • Operation: Continuous (24/7) RELAY CONTROL: • Relay outputs driven via 74HC595 shift registers (SPI-style) • 3 × 74HC595 chained • OE pin must have hardware pull-up (outputs OFF at boot) • ESP32 enables outputs only after startup • Relay drivers with proper flyback protection FAILSAFE / SAFETY: • Master relay/contactor that cuts power to ALL lamp outputs • Must drop on: - ESP32 crash - Watchdog timeout - Power instability • Safe power-up and fail...

Abstract: Manufacturing-Ready 130nm CMOS Inverter Design The objective of this project is to design, verify, and prepare a standard CMOS inverter for fabrication using the SkyWater 130nm Open-Source PDK. Unlike theoretical projects, this work follows a complete "Silicon-to-GDS" flow. The process begins with Schematic Capture and Pre-Layout Simulation to establish electrical baselines. This is followed by Physical Layout, where the geometric structures of the NMOS and PMOS transistors are manually drawn according to strict foundry Design Rule Checks (DRC). The design is then validated through Layout vs. Schematic (LVS) to ensure physical-electrical equivalence. Finally, Parasitic Extraction (PEX) is performed for Post-Layout Simulation to account for real-world wire resistance and...

I need help building a working prototype of a small interactive toy. The prototype requires: A pop-up mechanism (using solenoids, springs, and/or small motors). Integration with Raspberry Pi or Arduino for control. Wiring/programming to operate the mechanism. A simple phone/web app to trigger the toy remotely. Requirements: Experience with mechanical design and prototyping. Hands-on skills with Raspberry Pi/Arduino electronics. Must show past project work (photos, CAD, or GitHub). Deliverable: A working physical prototype (not just design files) that demonstrates the pop-up mechanism controlled by Raspberry Pi/Arduino. Budget: Budget will be discussed based on scope and experience. Please provide: What’s your estimated cost? How did you arrive at that number (materials, ...

Overview I’m looking to develop a robust UART to UDP bridge on STM32 for handling large binary frames and NMEA data. The aim is to enhance data transmission reliability between devices. Scope of work - Develop a UART RX system with DMA and ring buffer on STM32 for lossless data reception. - Implement UDP TX using LWIP for sending data over UDP with configurable IP and port. - Handle large frames by sending in single datagram or using fragmentation protocol (frame_id, chunk_index, total_chunks, crc) for payloads around 10KB. - Optional: forward NMEA data on a separate UDP port. - Deliver complete CubeIDE project and documentation. - Test and verify UDP reception with log/pcap/wireshark or video to prove valid frame transmission. Additional information I’ll accept delivery a...

I already have a working PCB built around an Xsens MTi-630 IMU and an NXP MKV56 microcontroller. What I need now is a technician who can revise the existing firmware so the remote camera head delivers rock-solid motion compensation on set. Your task is to design and embed a custom sensor-fusion routine that blends gyro, accelerometer, and magnetometer data from the MTi-630, then feed that fused orientation into the motor-control loop over CANopen. I’m aiming for a balanced mix of speed and accuracy so operators never feel lag yet still enjoy drift-free performance during long takes. You will be starting from my current codebase (MCUXpresso / NXP SDK), which already handles basic hardware abstraction and CANopen messaging. The focus is on: • Writing or adapting a quaterni...

Je souhaite développer un système embarqué destiné à l’automatisation domestique. L’objectif est de concevoir une carte compacte capable de dialoguer, via des modules de communication sans fil, avec divers capteurs et actionneurs déjà présents dans la maison ou ajoutés ultérieurement. Le travail inclut la phase matérielle (schéma et PCB), le développement du firmware et les tests de communication. Les protocoles sans fil à privilégier (Wi-Fi, Bluetooth Low Energy, Zigbee, etc.) pourront être définis selon la portée, la consommation et l’interopérabilité requises. Livrables attendus : • Schéma électronique complet e...

The goal is straightforward: as soon as an ESP device is present—whether connected over Wi-Fi or broadcasting in monitor mode could be spotted in hidden places

Necesito integrar cancelación de ruido activa (ANC) en mis protectores auditivos 3M PELTOR X2, pensados para un entorno industrial. El objetivo es que el nivel de ANC pueda regularse mediante un control manual fácilmente accesible en el propio casco y que todo el sistema funcione con baterías recargables para evitar el uso de pilas desechables. Busco a alguien con sólida experiencia en electrónica de audio que pueda: • Diseñar el esquema electrónico y la PCB necesaria para añadir micrófonos, etapa de procesamiento y amplificación. • Incorporar un potenciómetro o selector físico que permita subir o bajar la intensidad de cancelación. • Prototipar y probar el sistema directamente so...

Ich möchte mit dem „BBC micro:bit mit Kitronik Inventor’s Kit“ zwei kleine Experimente umsetzen und suche dafür eine komplette Dokumentation in Video-Form: 1. Aufgabe A – Sonnen-Ventilator • Bei Helligkeit soll ein Ventilator anlaufen, bei Dunkelheit stoppt er. 2. Aufgabe B – Taster-Licht • Drücke ich Taste A, geht eine LED an und schaltet sich nach exakt 2 Sekunden wieder aus. Lieferumfang, den ich von dir erwarte • Ein durchgängiges Video-Tutorial (Schritt für Schritt, klar erkennbar gefilmt) vom Aufbauen auf dem Breadboard bis zum Testen der beiden Schaltungen. • Mindestens drei scharfe Fotos der fertigen Verdrahtung aus unterschiedlichen Winkeln. • Eine kurze, anfängerfreundliche Er...

For my current university project I have to build a compact PCB whose only job is to collect data from several temperature sensors and route those readings to the rest of my prototype through simple wired connectors. Everything must be laid out and modelled inside Fusion 360, right down to the housing that will protect the board once it is fabricated. Here is what I need from you: • Create the full schematic and board layout in Fusion 360’s electronics workspace, optimised for straightforward sensor-integration and robust wired headers. • Export clean Gerber/Drill files plus the native Fusion 360 design so I can iterate later. • Model a 3-D printable enclosure in the same project file, dimensioned precisely to the finished PCB, with openings for the temperature-...

Project Brief: Stealth-Modified Automatic Parking Disc (Certified for Public Road Use in Germany) Project Goal: I want to technically modify a certified electronic parking disc approved for use in Germany (must have an official certification number and ECE approval), so that it continues to automatically update the displayed parking time even after the vehicle has been parked. This modification must be invisible and undetectable from the outside, meaning the device must look and behave like the original product to any observer or parking enforcement officer. Background: Standard electronic parking discs are designed to detect when a vehicle is turned off and then freeze the display at the next permissible half-hour mark. This allows parking enforcement to determine how long the car has b...

I want to turn my stock WowWee MiP into a fully-independent companion with far more capability than the original phone-controlled toy. The big push is to give it functional robotic arms—servo-driven, proportional, and strong enough to perform simple pick-and-place demos—while keeping the self-balancing chassis intact. To drive everything, I need an internal “brain” (Raspberry Pi, ESP32, or another MCU you’re comfortable with) that can: • run onboard code without any phone connection • store multiple programs in flash so I can swap behaviors on the fly • process a forward-facing camera for navigation and object tracking • handle voice-command triggers and speak back in character using a small speaker For interaction I’m l...

Necesito ayuda puntual para afinar un proyecto existente sobre ARM STM32. El hardware ya cuenta con: • Protocolo de comunicación binario implementado • Dos tiras WS2812 de 60 LEDs cada una, controladas de forma independiente • Módulo RFID PN532 • Conjunto de switches de entrada Mi prioridad ahora es la integración del RFID y los switches; los obstáculos que enfrento son Problemas de software. Quiero que ambos elementos se lean de forma fiable y se enlacen correctamente con el resto de la lógica ya programada. Busco a alguien con demostrable Experiencia en: – Desarrollo sobre microcontroladores STM32 (bare-metal o HAL). – Manejo de periféricos I²C/SPI, interrupciones y temporización precisa. ...

I'm looking for an experienced programmer to develop RF modules based on MTK chips. The primary functionality required is signal reception, specifically for digital signals. This project extends to firmware modification for new hardware of the F21 Pro model, adapting it to work with US bands and ensuring wide usability. Key Requirements: - Modify NV data in the firmware to suit the new chipset (likely running on LWTG) and adapt this file for US band compatibility. - Ensure the firmware can be flashed easily to multiple phones and that a complete backup source file is provided. - Conduct thorough compatibility testing for the firmware. Ideal Skills and Experience: - Strong background in RF engineering and programming. - Expertise with MTK chipsets and NV data modifications. - Experie...

Job Description:- We are a registered company coordinating academic projects in the Embedded / ECE domain for Indian universities. We are looking for one reliable freelance Embedded Systems developer for long-term, project-wise collaboration. This is not a full-time job. Work will be assigned per project. Scope of Work Develop Embedded / ECE hardware or simulation-based projects Support domains like: Embedded Systems, IoT, ARM / Microcontrollers FPGA / VLSI (optional) Control systems / Sensors / Automation (as applicable) Deliverables per project: Working code / simulation / hardware logic Result screenshots / output proof Project report content (chapter-wise) Project PPT content IEEE conference paper draft Scopus journal extended paper draft Support 1–2 rounds of re...

I'd like to create a schematic and PCB layout that I can use to print from a photo I have. The layout is based on an ATmega and an ESP32, along with a servo connected to the ATmega. I'd like a guide on how to create a schematic file that I can modify and use in the future, not just the photos I have.

I have a production-ready, IGBT full-bridge welding inverter that already powers both TIG and MMA processes, yet the embedded side still needs a final expert pass before release. The control board is built around 8051 and STC MCUs running Keil C51 firmware, and every line of code directly shapes arc stability, HF start, AC balance, soft-start, and safety interlocks. The short-term goal: review, tidy, and extend the existing code so it drives the power stage flawlessly in TIG and MMA, AC and DC. That means refining PWM timing, gate-drive dead-time, current-feedback filtering, and all the little state-machine details that separate a decent welder from a great one. Core tasks and deliverables • Audit the present C51 codebase, flagging race conditions or timing pitfalls. • Im...

Project: Calling / Video Conferencing App (Zoom-like) We are looking for an experienced developer/team to build a calling and video conferencing application similar to Zoom for web and mobile platforms. Core Requirements: One-to-one and group audio & video calling Real-time conferencing with low latency User authentication & meeting management (create, join, schedule) Screen sharing feature Chat during meetings Call controls (mute, video on/off, end call) please share me your samples work this is big client

I need help setting up two Nema 17 stepper motors to be controlled remotely via two ESP32 boards. One board will be in the remote and the other in the receiver. Requirements: - Manual control of stepper motors - Input commands using an analog joystick Ideal Skills and Experience: - Experience with ESP32 and stepper motors - Familiarity with joystick integration - Strong knowledge of manual control systems Please provide a detailed plan and relevant experience in your bid.

Looking for a mature profibus software solution for raspberry pi

Need software enginner who will help for STM32 Programming Skills required : 1. C Programming and debugging 2. should know Free RTOS Concepts 3. Shall be able to prepare Design using state flow diagram and flow charts 4. shall be able to write the test cases to test the project in excel sheet TASKS are : 1. make PWM OUT Woking and control wheels 2. Make the joystick Inputs working and get the ADC inputs from Joystick (this i have already done , half rest needs to be continued) Digital Input work as E-STOP input 4. Make Proximuty sensor and Ultrasonic sensor working With this i am going to prepare a Robotics vehicle for my FARM For sparying purpose . Future Tasks : 1. Make the input working using LORA and INTERNET (may be SIM800 Module) Process : 1. Requirement document will be pr...

Assalam o alaikum, I am looking for electrical engineers having expertise in following areas:  Embedded C Programming.  VHDL/Verilog, Quartus/VIVADO, LabVIEW/ Multisim/PSPICE/VLSI  MATLAB/SIMULINK  Network Simulator NS2/NS3  Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32.  IDEs like Keil MDK V5, ATmel studio and MPLab XC8.  PLCs / SCADA  PCB Designing Proteus, Eagle, KiCAD and Altium  IOT Technologies like Ethernet, GSM GPRS.  HTTP Restful APIs connection for IOT Communications. Actually I have multiple projects in different domains of electrical engineering and I already have a team of engineers working on them but due to workload I am looking for few more engineers to be a part of my team and work with us on regular basis.

I’m working on an STM32H7 design and I need the ST Acoustic_SL middleware added cleanly to my firmware so I can start experimenting with the Sound Localization feature right away. The CubeMX-generated project is already set up and building under STM32CubeIDE; what’s missing is a fully integrated Acoustic_SL stack (latest release) with all required dependencies, paths, and initialization code. Here’s what I’m expecting from you: • Import Acoustic_SL into the existing STM32H7 project and resolve every include, linker, and memory-map requirement. • Provide a minimal example (e.g., mic array capture + X-Y angle printout over UART) that shows Sound Localization working on real hardware. • Supply a short read-me that explains any CubeMX tweaks, middl...

I am assembling a pool of recently-graduated electrical engineers from Pakistan who can jump straight into hands-on circuit design, MATLAB/Simulink modelling, and clear, publication-ready report writing. Day-to-day work will range from breadboard-level prototyping to full simulation and verification, so the stronger your foundations in analogue and digital design the better. The tasks you’ll tackle typically start with a concept sketched in Proteus or Multisim, move into schematic and PCB work in Altium, and finish on the bench or in a virtual lab via LabVIEW or TinkerCAD. Microcontroller and embedded targets rotate between Arduino-based boards, Raspberry Pi modules, and mid-range FPGAs, so comfort switching among those platforms is essential. Core expectations • Design or r...

Freelancer Required – Development of Custom SCADA Remote Monitoring System for Solar Plants About Us We are a Solar EPC service provider engaged in Design, Installation, Commissioning, and O&M services for Grid-Connected Solar Power Plants. As part of our digital transformation, we want to develop our own in-house SCADA / Remote Monitoring System for solar plants. Project Objective To design and develop a custom SCADA-based Remote Monitoring System for solar power plants that enables real-time monitoring, analytics, alerts, and reporting. Scope of Work The freelancer will be responsible for end-to-end development, including: 1. Data Acquisition Integration with inverters, meters, weather sensors, SCBs, PLC/RTU Protocols: Modbus RTU / TCP, MQTT, OPC (preferred) 2. SCADA &...

I already have the hardware in hand (see the exact unit here: ) and need it configured into a rock-solid link for a DJI Matrice 400. The goals are simple but non-negotiable: • The device must pair over Bluetooth with smartphones and tablets, then feed telemetry and video to the Matrice in real time. • The whole chain has to stay online even when nearby frequency jammers or other RF noise are present. • Live status dashboards and alerts are required so I can see, at a glance, that every hop in the link is healthy. Here’s how I picture the collaboration: 1. You review the hardware specs and choose the most resilient protocol settings (frequency-hopping, spread-spectrum, encryption, power levels, antenna layout, etc.). 2. You walk me through the exact configurati...

I need a wearable device to detect sleep-time bruxism. Requirements: - Monitors muscle activity. - Alerts with sound when clenching. - Collects clenching duration and frequency data. - Must reside in india ( bangalore) Ideal Skills: - Arduino/ESP32 development - Python/TensorFlow Lite (microcontrollers) - Embedded systems & electronics (mic setup, signal processing) Hardware can be procured by me or reimbursed. Urgent requirement

I need a miniature sine-wave transmitter board. I will supply the exact antenna footprint and the precise target frequency (it will be somewhere below 100hz, specified down to the decimal). Your task is to design a PCB smaller than 2 cm × 2 cm that generates a clean, low-distortion sine wave, feeds it to the antenna, and runs for at least one month on a single CR2032 coin cell. It has step sweep formula Long-term frequency stability, minimal harmonic content, and ultra-low power consumption are critical. Feel free to use discrete components, a low-power MCU with DAC, a numerically controlled oscillator, or any other architecture that can hit the spec while staying inside the tight footprint and power envelope. Deliverables • Complete schematic and PCB layout (KiCad, Altium...

I’m rolling out a new control strategy and need a seasoned Omron PLC specialist who can make the controller talk fluently with the rest of our plant-wide software. The priority is integration—linking the Omron PLC to upstream and downstream systems so that real-time data, alarms, and commands move seamlessly between the controller and our supervisory platforms. Whether the target is a SCADA package, an HMI station, or even an ERP layer, the end result must be a robust, well-documented program that plays nicely with standard industrial protocols. Here’s what I expect: • Clean, fully commented ladder or structured-text code (CX-Programmer / Sysmac Studio, as appropriate). • Communication setup and mapping for each external system, including tags, registers, a...

Support / Service Technician . I am setting up a three-month trial run and need a reliable SMD technician to keep everything running smoothly on a part-time basis (about 5 to 8 hours per week, with some flexibility around peak periods). You will be supplied stock and trained for first level service and exchange , latter if this works you will be trained for , hands-on with Soldering and assembly of fine-pitch SMD components, diagnosing boards for Troubleshooting and repair when faults appear, and carrying out Quality control checks before shipping. You do not need to be an certified engineer to apply , we we seek people who are reliable and can work with , if you have worked in mobile phone technology and repair , you should apply I also rely on accurate Stock management of parts...

We are seeking a highly experienced freelancer to help perfect real-time transparent computer-vision overlays and a vGamepad / joystick-based targeting system designed for console environments. This is not a beginner or theory role — we need someone who has hands-on experience with Cronus Zen, microcontrollers, and live console testing. Core Responsibilities Develop and refine transparent CV overlays (low-latency, accurate alignment, stable rendering) Implement and tune vGamepad / XInput joystick targeting logic driven by CV detections Integrate and test with Cronus Zen (HID behavior, stick output, signal timing) Work with microcontrollers (Arduino / Portenta / similar) in real-time input pipelines Test directly on Xbox or PlayStation consoles (physical hardware required) Optimize fo...

I'm looking for an experienced Arduino programmer to set up a project on an Arduino Nano. Requirements: - 2 PWM outputs - 200Hz frequency - 0-10 second ramp-up time - Up to 2 amps per channel - Triggered by a manual switch - Outputs to control a coil on a hydraulic valve Ideal Skills and Experience: - Proficiency with Arduino programming, especially with PWM control - Experience working with Arduino Nano - Knowledge of hydraulic systems and valves - Ability to implement adjustable ramp-up times Please provide your approach and relevant experience.

I need a complete mixed-signal design for an eight-channel Bluetooth communication system: four inputs for data acquisition and four outputs for actuation or stimulation. The unit must span a wide frequency range—everything from standard audio bandwidth up into the low-MHz region—while keeping each output capped at 5 V, 5 mA so it remains safe for direct human-facing applications. Because the project will handle live data, the entire chain has to support real-time streaming over Bluetooth Classic; latency has to stay low enough that an audio-rate round-trip remains perceptually seamless. Inside the enclosure, you can split the path however you wish—purely analog front ends feeding ADCs, DSP blocks, then DACs and analog output buffers—so long as the final architec...

I am ready to move fast on a custom sonar project built around STM32 hardware (CubeIDE + HAL). Your task is to create production-grade firmware that: • Captures long-range sonar returns through the onboard ADC and a TUSS4470 (or comparable) front-end, with signal conditioning tuned for maximum range performance. • Streams that data in real time using a compact, binary UDP protocol—both transmit and receive paths—so it plays nicely with an existing mobile-app protocol. • Listens for run-time commands such as gain adjustments, start/stop, mode selection, and ping-rate changes, then acts on them immediately. Deliverables I need: 1. Well-documented STM32 firmware source code. 2. A clear protocol reference (frame layout, timing, byte ordering, command set). ...

I am rolling out a trio of inter-linked prototypes that tackle pressing urban and environmental challenges while showcasing cutting-edge AI, blockchain, and IoT engineering. First, the AI-driven Smart Traffic System must ingest multi-sensor feeds, apply real-time reinforcement learning, and demonstrate measurable gains in a simulation such as SUMO—specifically a double-digit reduction in congestion and wait times across a 20-intersection grid. Second, the Blockchain Voting System needs an end-to-end verifiable ballot flow. I expect audited Solidity or Substrate contracts, mobile-friendly front-end, zero-knowledge vote secrecy, and a testnet demo with at least fifty dummy voters that passes a public audit script. Third, the Solar-Powered Smart Watering System will run on a low-powe...

I have an industrial-scale CO₂ subcritical cooling plant that will be managed by an Eliwell controller (without extenssions modules) , and I need a specialist who can choose a few controller models which would fit this system. I want to use 8DI(digital inputs), 5DO(digital outputs), 2AO(analog outputs for FI control), and 3AI(analog inputs). I attached file hand made hydraulic diagram. I need to control two "satellites": LT1 SL and LT2 SL. There are to frequency inverters: FI1-control M1 compressor, FI2-control M3 compressor in different "satellites". I need Eliwels models manuals, in which must marked text why this suitable for my CO₂ subcritical cooling plant

Project Description: I’m building a small ROS 2–ready mobile robot platform aimed at undergraduate and MSc robotics education. The mechanical chassis and system architecture are already defined, and I’m now looking for an experienced STM32 firmware developer to implement the motor controller firmware. This is not a vague research project — a detailed firmware specification, protocol definition, and safety model already exist. The task is to implement them cleanly and robustly. Scope of Work: You will develop firmware for an STM32-based motor controller with the following characteristics: Core functionality: - Closed-loop wheel speed control (2 motors) - Quadrature encoder input (3.3V TTL) - PWM + DIR motor driver outputs (one per motor) - Deterministic control ...

I'm looking for a skilled hardware engineer with firmware experience to design a control system for a domestic heating product. Key Responsibilities: - Design microcontroller and power supply components - Develop basic control logic firmware Ideal Skills and Experience: - Expertise in microcontroller and power supply design - Firmware development proficiency, especially in basic control logic - Experience in temperature control systems is a plus

I need a 4-layer PCB layout that will drive a new consumer-electronics device. The board footprint is roughly 8 inches on its longest side and must sail through my manufacturer’s DFM/DFT checks without a single revision request. Core circuitry includes a microcontroller at the heart, a collection of digital and analog sensors, Wi-Fi & Bluetooth modules, a microphone, speaker, relay, display interface, GUI memory and associated logic. Please route with proper impedance control, isolation for the RF section, and attention to audio trace integrity so that EMI is kept to a minimum. Deliverables • Full Altium, KiCad or Eagle design files (your choice) • Gerber, drill, pick-and-place and BOM ready for turnkey assembly • Layer stack-up, controlled-impedance note...

I’m building an industrial-grade control panel that runs entirely on an Arduino and drives motors through fully programmed sequences—no manual switches or computer dashboards, just reliable, repeatable automation once the sketch is flashed. Here’s what I need: • An Arduino sketch that steps each motor through the required sequence, including start-up delays, speed changes, direction (when applicable), and safe shut-down logic. • A wiring diagram that shows every connection from the Arduino pins to motor drivers, relays, fuses, and any protection or feedback components you feel are essential for industrial duty. • Parts list with exact component ratings so I can source hardware that withstands continuous operation. • Brief commissioning guid...

We are seeking an experienced Hardware Development Engineer to lead the end-to-end hardware development of a consumer-grade embedded system. The role involves system-level architecture, component selection, schematic design, PCB layout, and hardware validation in collaboration with the firmware engineer. The engineer must strictly adhere to the milestone plan and deliverables outlined below. Key Responsibilities: - System-level hardware architecture and design freeze. - Component selection (MCU/SoC, power ICs, storage interfaces, wireless modules). - Schematic design and PCB layout (high-speed + mixed-signal, EMI-aware). - Power integrity, grounding, shielding, and DFM/DFA compliance. - Prototype fabrication support and manufacturer Q&A. - Hardware bring-up support and validation with...

We are seeking an experienced Firmware Engineer to lead the development of embedded software for next-generation industrial IoT systems. The role involves working with high-speed data interfaces, advanced wireless technologies, and sensor integration. Key Responsibilities: - Develop, optimize, and debug firmware for industrial IoT devices. - Integrate wireless communication protocols (Wi-Fi, BLE) and sensor systems. - Ensure seamless hardware-software integration and system reliability. - Collaborate with hardware teams for system bring-up and testing. Preferred Freelancer Locations: Japan, Taiwan, South Korea, Thailand, Vietnam, Eastern Europe, India, China. Deadline: 2 months

I need a clean, production-ready PlatformIO project for the Nordic nRF51822 written in C/C++. The example must boot, scan for nearby BLE devices, connect to one of them, and exchange plain text strings—ideally via a Nordic UART–style GATT service. Please build it around a SoftDevice or Nordic SDK you have already proven on real hardware; I do not want AI-generated scaffolding that compiles but fails at runtime. The code should: • compile inside PlatformIO with a single pio run command • flash successfully to an nRF51822 DK or compatible module • start scanning, connect on the first match, and perform a two-way text message exchange • cleanly disconnect and resume scanning Deliverables I’ll review: 1. A complete PlatformIO project folder (ma...

I aim to develop a solution that will facilitate data communication between an Arduino UNO and a SIM7600E using AT+COMMAND. The primary data in focus will be temperature sensor readings. Key Responsibilities: - Setting up a reliable connection between Arduino UNO and SIM7600E - Implement AT+COMMAND for effective communication - Design a protocol for transmitting temperature sensor data Ideal Skills: - Solid knowledge of Arduino - Proficiency in handling SIM7600E - Experience in implementing AT+COMMAND - Understanding of sensor data transmissions. Please ensure you can efficiently deliver on these requirements, and provide the mentioned sensor data communication before placing your bid.